Underverse Battles is a free-to-play turn-based fighting game developed by TornadoTeam for Android devices. The game is based on the mechanics of Undertale and the Underverse animated series by Jael Peñaloza. In this game, the player selects a character and fights against other players. The game's story revolves around Ink Sans, who assembles a team to stop Cross from stealing Sans's soul and invading the original universe.

Underverse Battles offers both single and multiplayer modes, a story mode, many characters and locations for battles, and a mini-game inside the game. The game's graphics and sound effects are well-designed and provide a good gaming experience. The controls are easy to use, and the turn-based fighting system is engaging and requires strategic thinking.

The game's developers have promised to update and improve the game regularly. Overall, Underverse Battles is an enjoyable game that fans of Undertale and Underverse should definitely try out.